Is Pepsi Really a Substitute for Coke? Market Definition in Antitrust and IP
Mark A. Lemley
Stanford Law School
Mark P. McKenna
Notre Dame Law School
April 10, 2012
Georgetown Law Journal, Vol. 100, p. 2055, 2012
Stanford Law and Economics Olin Working Paper No. 424
Notre Dame Legal Studies Paper No. 12-75
Antitrust law explicitly depends on market definition. Many issues in IP law also depend on market definition, though that definition is rarely explicit.
Applying antitrust's traditional market definition to IP goods leads to some startling results. Despite the received wisdom that IP rights don't necessarily confer market power, a wide array of IP rights do exactly that under traditional antitrust principles. This result requires us to rethink both the overly-rigid way we define markets in antitrust law and the competitive consequences of granting IP protection. Both antitrust and IP must begin to think realistically about those consequences, rather than falling back on rigid formulas or recitation of the mantra that there is no conflict between IP and antitrust.
Number of Pages in PDF File: 63
Date posted: April 11, 2012 ; Last revised: January 2, 2015
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